Scotland’s Ten Big Supermarkets Already Hold the Weekly Shop

Scotland’s ten largest supermarket chains already supply more than 91% of the calories people buy to eat at home. Nesta, the research and innovation foundation, set that out on 7 October 2026 from Worldpanel take-home data for 2024, with University of Edinburgh maps of how long it takes to reach those stores by car, foot, bike and bus.

The maps are a brief for a UK healthy food standard that would force big grocers to report how healthy their sales are and then hit a legal target. That law still has no published consultation. Shops in Scotland have, since 1 October 2026, already had to pull many high-fat, sugar and salt lines off aisle ends and checkouts.

Scottish Households Already Buy Most Calories From Ten Chains

The chains in the Edinburgh store file are Tesco, Sainsbury’s, Asda, Aldi, Morrisons, Lidl, Co-op, Waitrose, Iceland and M&S Food. Ocado is the usual eleventh name in Nesta’s UK work and was left out of the maps because it has no stores. Angela Mitchell, head of Nesta Scotland, and Elena Mariani, a principal data scientist there, used Worldpanel by Numerator’s Take-Home Purchase Panel for Great Britain from 1 January to 31 December 2024, a self-reported record of where households buy food to eat at home.

Across income, social grade and urban-rural class, those ten names still take the shop. The leftover calories, Nesta says, sit mainly in bargain stores and freezer centres, not in a parallel rural convenience system.

TAKE-HOME CALORIES AND HEALTH SCORES

The lowest share in that cut is still 92%. A legal target on these tills would land on the same weekly shop in a DE household as in an AB one, which is the part of the briefing that holds up even if the drive-time maps do not.

The Health Score Gap in Those Baskets Is Two Points

Nesta scores the healthiness of those purchases with a sales-weighted nutrient profile score, the metric it wants used for reporting and for the target itself. Higher-income and AB households sit two points above the lowest income band and grade DE. The range is 64 to 66, a small step on a 100-point scale.

The foundation still says lower-income groups have the most to gain, because they already buy more than 90% of take-home calories in the same ten chains, and because a sales target would change what is sold, promoted and reformulated rather than asking shoppers to hunt for a better option. Voluntary retailer targets, in Nesta’s earlier UK work, have not closed the gap on their own.

SCOTLAND’S WEIGHT FIGURES IN 2024

• Adult obesity: The Scottish Health Survey records 31% of adults living with obesity in 2024, similar to 32% in 2023 and up from 24% in 2003.
• The deprivation split: Age-standardised adult obesity ran from 24% in the least deprived fifth of areas to 36% in each of the two most deprived fifths.
• Children: 18% were at risk of obesity, the high point in a series that has moved between 13% and 18% since 1998, and 33% were at risk of overweight including obesity.
• Nesta’s modelled cut: If the supermarket target were rolled out, the foundation estimates a 26% fall in child obesity and an 18% fall in adult obesity in Scotland, which it equates to 40,000 fewer children and 300,000 fewer adults living with obesity.

Those last two percentages are a modelled relative cut, not a new reading of the survey. The survey’s 18% child figure is how many children were already at risk of obesity in 2024. Mean adult BMI in that survey was 28.1, up from 27.1 in 2003, with a higher share among women (35%) than men (27%).

How Far Scots Live From a Major Supermarket

Ricki Runions, Nishmeet Singh and Lindsay Jaacks at the University of Edinburgh built travel times to the ten chains from every residential address they could match. They used Food Standards Agency store data downloaded on 4 February 2026, Royal Mail’s Postcode Address File from February 2026, and Scottish Government urban-rural and SIMD files from 14 April 2026. The store file holds 2,025 supermarket retailers. The address file holds 2,795,411 records, more than the 2,509,300 households with a usual resident in the 2022 census, because the mail file still carries second homes and some leftover non-homes.

Nesta treats a 15-minute trip by car, foot, bike or bus as a reasonable journey, borrowing the idea from 20-minute neighbourhood planning and noting that car ownership is 88% in rural areas and 64% in urban ones.

SHARE OF ADDRESSES WITHIN REACH

On deprivation, the Edinburgh team found no clean national slope. The most deprived fifth of areas (SIMD quintile 1) had the best walking and bus reach: 78% within 15 minutes on foot, 85% by public transport and 98% by bike, with 99% inside a 15-minute drive. The least deprived fifth sat at 71% walking, 77% by bus, 97% by bike and 100% by car. The dip is in the middle: quintile 3 is only 89% inside a 15-minute drive and 58% inside a 15-minute walk. Edinburgh, Glasgow, Aberdeen and Dundee are all at 100% for a 15-minute drive, though 16% to 17% of addresses in Edinburgh and Glasgow still sit outside a 15-minute walk.

Remote Rural Coverage Falls Sharply in Argyll and the Isles

Distance follows rurality more than poverty. A 15-minute drive reaches 94% of addresses in accessible rural areas, 82% in remote small towns and 51% in remote rural areas, where only 36% are inside 10 minutes. Inside that remote rural band, local authorities are not the same country.

REMOTE RURAL SHARE WITHIN A 15-MINUTE DRIVE

• Aberdeenshire: 95% of remote rural addresses.
• Scottish Borders: 94%.
• Dumfries and Galloway: 86%.
• Orkney: 74%.
• Shetland: 54%.
• Western Isles: 53%.
• Argyll and Bute: 41%.

The people in those last three places still buy over 90% of take-home calories from the same ten chains, Nesta’s Worldpanel cut says. They are driving further, using a weekly run, or ordering in. Edinburgh did not model delivery, and Nesta notes that 99.7% of households can get an online drop from at least one of the biggest chains, a figure that will not feel the same on an island ferry timetable as it does on the mainland.

So the equity case in the briefing is really a shopping-habit case. Urban addresses in the most deprived fifth already live closest, on foot and by bus, to the stores that would be regulated. The doors the maps cannot reach are concentrated in Argyll, the Western Isles and Shetland, and those households still appear in the same till data.

Holyrood Has Already Restricted Junk Food Promotions

While that UK sales target remains a paper commitment, Scotland has already changed the aisle. The Food (Promotion and Placement) (Scotland) Regulations 2025 brought in restrictions from 1 October 2026 for businesses with more than 50 employees, in store and online. Prepacked drinks, confectionery, biscuits, cakes, ice cream, savoury snacks, breakfast cereals, sweetened dairy and some ready meals that fail the 2004/05 nutrient profile model can no longer sit at entrances, checkouts or aisle ends, and multi-buy deals plus free sugary-drink refills are limited.

We know that promotions and the prominent product placement can encourage over-consumption and impulse buying of foods with high levels of calories, fat, sugar and salt.

Maree Todd, Public Health Minister, Scottish Government

Ewan MacDonald-Russell, deputy head of the Scottish Retail Consortium, called the rules proportionate and said grocers would still spend around £20 million to deliver them, in part because they match the English and Welsh model. Todd’s own briefing repeats that two out of three adults in Scotland are overweight or obese, and that poorer areas take more of the harm. That is a placement law, not a sales-mix target. It already binds many of the same ten chains, and it also pulls in large convenience groups that would sit outside Nesta’s preferred first phase of a healthy food standard.

Adding Spar and Scotmid Barely Moves Rural Drive Times

Edinburgh tested what happens if Spar, Scotmid and Londis join the ten. A 15-minute drive would then cover 97% of addresses instead of 96%. In remote rural areas the lift is 51% to 55%. Walking is where the extra fascia shows: 81% to 88% in large urban areas, 73% to 82% in other urban areas, inside 15 minutes on foot.

Nesta’s conclusion is that ministers should lock the target on the largest chains first, because widening the net would not fix island drive times and would add a lot of small stores for a thin rural gain. The same table, read from the city pavement, says the extra names help people who do not drive. Urban walkers are also the group with the best existing access to the ten, so the convenience lift is a second-order urban gain, not the island gap the maps keep highlighting.

If the ten chains must raise the health score of everything they sell, the remaining slice of calories in bargain stores, freezer centres and symbol shops is the obvious place for the lines they would rather sell less of. The Edinburgh work does not test that shift. It only tests the door.

Westminster’s Sales Target Still Has No Start Date

The healthy food standard was written into Fit for the Future, the 10 Year Health Plan for England, in July 2025. Nesta wants a converted nutrient profile target around 69, a couple of points above a sector average it has put at 67, met through recipe changes, range mix and promotion rather than a price spike. Its July 2026 update said all 11 large UK retailers could hit 69, with a GB-wide obesity cut around 20% (19% in adults, 23% in children in that run). The Scotland-specific 26% and 18% cuts sit on top of that UK work. It is not in force.

THE DATES THE TARGET HAS ALREADY MISSED

1. July 2025: The 10 Year Health Plan commits to mandatory healthier food sales reporting for large food businesses and to targets on the healthiness of sales.
2. December 2025: Ashley Dalton, then the public health minister, asks the Food Standards Agency to keep supporting the design work and flags the FSA as a possible regulator, subject to consultation.
3. 8 June 2026: Sharon Hodgson, answering for the Department of Health and Social Care, says a full public consultation will come “soon” and that reporting should come into force before the end of this Parliament, no later than 2029.
4. 25 June 2026: An FSA board paper on mandatory healthy-food sales reporting says DHSC still plans to consult “in due course”, that no regulator has been chosen and that no funding has been provided. The paper applies to England, Northern Ireland and Wales. It states that the scheme was announced for England, and that any decision to run it in the devolved nations, and who would regulate it there, sits with those ministers.
5. 1 October 2026: Scotland’s placement and promotion rules go live in shops.
6. 7 October 2026: Nesta publishes the Scotland calorie shares and the Edinburgh access maps.

Health charities have spent the year asking for that consultation, not arguing about Argyll drive times. The Scotland paper did not open a public row; it landed as another briefing in a policy that has already slipped from “this Parliament, starting now” toward a reporting date that can wait until 2029. Holyrood can still choose to align. The tills the maps describe are already taking more than nine in ten of the calories people carry home, including in the poorest postcodes and in most rural ones. The missing instrument is a start date, not a new store on a single-track road.

Disclaimer: This piece is news reporting and analysis of published research and government policy, and it is for information only. It is not medical, dietary or public-health advice, and it is not a recommendation to change what you eat, buy or prescribe. Anyone considering a change in diet or treatment should speak first to a GP, a registered dietitian or another qualified clinician. Figures, store counts and policy statuses reflect the named Worldpanel analysis, University of Edinburgh maps, Scottish Health Survey and government papers above, and they will move as consultations, surveys and shop networks are updated.